Is Slime Safe For Kids?

My kids love slime.

THEY LOVE IT.

They have loads of pots of the stuff, some shop-bought and even the kits for mixing it and making their own.

Our carpets, in places, are a casualty of slime and have areas that we can’t remove from… But I digress.

My nine-year-old likes to mix her own slime using her kits and pretending to be a would-be chemist. We actively encourage it because it’s better than sitting on a tablet, console or staring at a TV all day.

But… Is it actually safe?

National Slime Day & Its Popularity As A Present

December is here, and Christmas excitement is building…

National Slime Day on December 7th (Yes, it has its own day!) brings an extra burst of colour, creativity, and sensory fun into homes across the UK.

At Safe and Sound, we recognise the joy slime offers; its squishy textures, vibrant colours, and endless customisation options make it one of the most popular gifts of the season.

However, as first aid training specialists, we also know that slime can pose real dangers when not handled correctly, especially for young children.

With DIY slime kits growing in popularity as Christmas presents, now is the ideal time for parents, guardians, and educators to understand the risks, the symptoms to watch for, and the first aid steps to take if things go wrong.

This comprehensive guide explores the fun of slime while highlighting the essential safety information families need to enjoy slime safely and confidently.

The Festive Appeal of Slime: Why Kids Love It

Children adore slime for its sensory experience, and it’s easy to see why:

• Tactile stimulation supports sensory development and fine motor skills.
• Creative customisation, from glitter to colours to textures, encourages imaginative play.
• DIY kits provide an engaging introduction to simple science and chemistry concepts.
• Social play encourages bonding as children create slime with friends or family.

As a Christmas gift, slime offers hours of entertainment, is affordable, fun, and universally appealing.
But despite its benefits, families should remain aware of the potential hazards.

I’m certainly not here to say ‘don’t buy slime’ when my own kids are huge fans of the stuff.

As a representative of Safe and Sound, I’m just here to say… Be aware of any potential danger and be ready if it occurs.

This guide will prepare you for that and explain how to treat any side effects that slime can cause.

Understanding the Potential Dangers of Slime

While many commercially produced slimes are tested for safety, homemade slime or lesser-regulated products may still contain ingredients that can harm children if misused.

Below are the most common risks associated with slime.

Skin Irritation and Chemical Burns

Many DIY slime recipes rely on borax, contact lens solution, glue, bicarbonate of soda, or ingredients containing sodium borate. These substances can:

• Causes skin irritation
• Trigger dermatitis
• Lead to mild chemical burns, especially with prolonged contact

Children with sensitive skin are particularly at risk.

Allergic Reactions

Slime can contain:

• Dyes
• Fragrances
• Preservatives
• Latex (in some kits)
• Glitter or metallic additives

These may cause allergic skin reactions, rashes, or respiratory discomfort if inhaled during mixing.

Choking Hazards

Young children may place slime or its decorative additions, such as beads, foam balls, or sequins, into their mouths.

Slime is not intended to be ingested and can pose a significant choking risk.

Toxicity if Ingested

Many slime ingredients are safe to touch but not safe to eat. Consuming slime may lead to:

• Abdominal pain
• Nausea or vomiting
• Chemical exposure
• Burning sensations in the mouth or throat

In large enough doses, ingesting borax-based slime can be dangerous.

Eye Injuries

Slime can accidentally be:

• Rubbed into a child’s eyes
• Flicked during play
• Transferred from hands to the face

Some additives can cause eye irritation, redness, or chemical burns.

Mould and Expired Slime

Slime, like most things, has an expiry date.

Homemade slime won’t have any sort of warning or dates on it for when it can be thrown away, and it’s more likely to have been made in a less-than-sanitary environment.

This can cause:

• Stomach bugs
• Skin irritation
• Sickness and diarrhoea

First Aid Guidance: What to Do If Something Goes Wrong

As a UK training provider committed to safety, we believe every household should know the essential first aid steps to take when slime-related incidents occur.

Below is clear, practical advice for parents and carers.

First Aid for Skin Irritation or Chemical Burns

Symptoms may include: redness, stinging, rash, blistering, or dryness.

What to do:

1. Remove the slime immediately and rinse the skin under cool running water for at least 10 minutes.
2. Gently wash the area with mild soap to remove residue.
3. Avoid applying creams, oils, or lotions unless directed by a medical professional.
4. If blistering, severe redness, or persistent pain occurs, seek medical advice.
5. For known allergies, consider using an antihistamine as directed.

First Aid for Allergic Reactions

Watch for: itching, hives, swelling of lips or eyes, coughing, or difficulty breathing.

What to do:

Mild reactions:

• Remove slime and wash skin thoroughly.
• Use a child-safe antihistamine if appropriate.
• Monitor for worsening symptoms.

Severe reactions (anaphylaxis):

• Symptoms include breathing difficulty, wheezing, swelling of the tongue/throat, confusion, or collapse.
• Call 999 immediately.
• Use an adrenaline auto-injector if the child has one.

First Aid if Slime Is Ingested

What to do:

1. Remove any remaining slime from the mouth.
2. Rinse the mouth thoroughly with cool water.
3. Give small sips of water or milk to dilute the substance.
4. Do not induce vomiting.
5. Contact NHS 111 for further guidance.
6. If the child is drowsy, vomiting persistently, or showing signs of severe discomfort, seek urgent medical help.

First Aid for Eye Exposure

What to do:

1. Hold the affected eye under cool running water for at least 10 minutes.
2. Encourage the child to blink frequently during irrigation.
3. Do not allow them to rub their eyes.
4. Remove contact lenses if present and safe to do so.
5. If the eye remains painful, red, or swollen, seek medical assessment.

First Aid for Choking Incidents

If the child is coughing:

Encourage them to continue coughing—it’s the most effective way to clear the obstruction.

If the child cannot breathe, cough, or speak:

1. Deliver up to 5 back blows between the shoulder blades.
2. If unsuccessful, give 5 abdominal thrusts (for children over 1 year).
3. Alternate between these until the object is dislodged or help arrives.
4. Call 999 immediately if the child becomes unresponsive and begin CPR if required.

How to Keep Slime Play Safe This Christmas

Slime can remain a fun and creative experience when the right precautions are taken. We recommend:

• Choosing reputable brands that are compliant with UK safety standards.
• Avoid DIY slime recipes involving borax or other harsh chemicals.
• Supervising children, especially those under 8 years old.
• Ensuring good handwashing before and after play.
• Setting time limits so slime does not remain on the skin too long.
• Storing slime safely away from pets and younger siblings.
• Checking ingredients for allergens.

By adopting these simple measures, families can enjoy slime while minimising risk.

Why First Aid Knowledge Matters

At Safe and Sound, we believe confident first aid knowledge empowers families to act quickly and calmly during unexpected situations. Whether it’s a minor irritation or a more serious reaction, knowing what to do can make all the difference.

Our UK-based training courses cover:

• First Aid Training
• Paediatric first aid
• Emergency first aid at work
• First Aid for Parents and Child Carers

Equipping yourself with these skills helps keep children safe—not just during slime play, but in everyday life.

A Safe, Fun Celebration of National Slime Day

National Slime Day offers an exciting opportunity to celebrate creativity, sensory learning, and festive fun.

With Christmas just around the corner, slime kits are sure to be found in homes up and down the UK.

By understanding the risks and knowing the correct first aid responses, families can enjoy slime safely while protecting children from avoidable harm.

For trusted first aid training designed to protect your family and community, we are here if you want to get in touch and book a course.